Remove closeAllFiles action from Web IDE

The only usage of this action was in the tests.

app/assets/javascripts/ide/components/commit_sidebar/editor_header.vue

@@ -29,7 +29,7 @@ export default {
     },
   },
   methods: {
-    ...mapActions(['stageChange', 'unstageChange', 'discardFileChanges']),
+    ...mapActions(['unstageChange', 'discardFileChanges']),
     showDiscardModal() {
       this.$refs.discardModal.show();
     },

app/assets/javascripts/ide/components/commit_sidebar/list.vue

@@ -55,7 +55,7 @@ export default {
     },
   },
   methods: {
-    ...mapActions(['stageAllChanges', 'unstageAllChanges', 'discardAllChanges']),
+    ...mapActions(['unstageAllChanges', 'discardAllChanges']),
     openDiscardModal() {
       this.$refs.discardAllModal.show();
     },

app/assets/javascripts/ide/stores/actions.js

@@ -20,10 +20,6 @@ export const discardAllChanges = ({ state, commit, dispatch }) => {
   commit(types.REMOVE_ALL_CHANGES_FILES);
 };
 
-export const closeAllFiles = ({ state, dispatch }) => {
-  state.openFiles.forEach(file => dispatch('closeFile', file));
-};
-
 export const setResizingStatus = ({ commit }, resizing) => {
   commit(types.SET_RESIZING_STATUS, resizing);
 };

spec/frontend/ide/stores/actions_spec.js

@@ -98,26 +98,6 @@ describe('Multi-file store actions', () => {
     });
   });
 
-  describe('closeAllFiles', () => {
-    beforeEach(() => {
-      const f = file('closeAll');
-      store.state.openFiles.push(f);
-      store.state.openFiles[0].opened = true;
-      store.state.entries[f.path] = f;
-    });
-
-    it('closes all open files', done => {
-      store
-        .dispatch('closeAllFiles')
-        .then(() => {
-          expect(store.state.openFiles.length).toBe(0);
-
-          done();
-        })
-        .catch(done.fail);
-    });
-  });
-
   describe('createTempEntry', () => {
     beforeEach(() => {
       document.body.innerHTML += '<div class="flash-container"></div>';